src/gtk/cursor.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        cursor.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "cursor.h"
  13 #endif
  14
  15 #include "wx/cursor.h"
  16 #include "wx/utils.h"
  17 #include "wx/app.h"
  18
  19 #include <gdk/gdk.h>
  20 #include <gtk/gtk.h>
  21
  22 //-----------------------------------------------------------------------------
  23 // idle system
  24 //-----------------------------------------------------------------------------
  25
  26 extern void wxapp_install_idle_handler();
  27 extern bool g_isIdle;
  28
  29 //-----------------------------------------------------------------------------
  30 // wxCursor
  31 //-----------------------------------------------------------------------------
  32
  33 class wxCursorRefData: public wxObjectRefData
  34 {
  35   public:
  36
  37     wxCursorRefData();
  38     ~wxCursorRefData();
  39
  40     GdkCursor *m_cursor;
  41 };
  42
  43 wxCursorRefData::wxCursorRefData()
  44 {
  45     m_cursor = (GdkCursor *) NULL;
  46 }
  47
  48 wxCursorRefData::~wxCursorRefData()
  49 {
  50     if (m_cursor) gdk_cursor_destroy( m_cursor );
  51 }
  52
  53 //-----------------------------------------------------------------------------
  54
  55 #define M_CURSORDATA ((wxCursorRefData *)m_refData)
  56
  57 IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject)
  58
  59 wxCursor::wxCursor()
  60 {
  61 }
  62
  63 wxCursor::wxCursor( int cursorId )
  64 {
  65     m_refData = new wxCursorRefData();
  66
  67     GdkCursorType gdk_cur = GDK_LEFT_PTR;
  68     switch (cursorId)
  69     {
  70         case wxCURSOR_DEFAULT:          gdk_cur = GDK_LEFT_PTR; break;
  71         case wxCURSOR_HAND:             gdk_cur = GDK_HAND1; break;
  72         case wxCURSOR_CROSS:            gdk_cur = GDK_CROSSHAIR; break;
  73         case wxCURSOR_SIZEWE:           gdk_cur = GDK_SB_H_DOUBLE_ARROW; break;
  74         case wxCURSOR_SIZENS:           gdk_cur = GDK_SB_V_DOUBLE_ARROW; break;
  75         case wxCURSOR_ARROWWAIT:
  76         case wxCURSOR_WAIT:
  77         case wxCURSOR_WATCH:            gdk_cur = GDK_WATCH; break;
  78         case wxCURSOR_SIZING:           gdk_cur = GDK_SIZING; break;
  79         case wxCURSOR_SPRAYCAN:         gdk_cur = GDK_SPRAYCAN; break;
  80         case wxCURSOR_IBEAM:            gdk_cur = GDK_XTERM; break;
  81         case wxCURSOR_PENCIL:           gdk_cur = GDK_PENCIL; break;
  82         case wxCURSOR_NO_ENTRY:         gdk_cur = GDK_PIRATE; break;
  83         case wxCURSOR_SIZENWSE:
  84         case wxCURSOR_SIZENESW:         gdk_cur = GDK_FLEUR; break;
  85         case wxCURSOR_QUESTION_ARROW:   gdk_cur = GDK_QUESTION_ARROW; break;
  86         case wxCURSOR_PAINT_BRUSH:      gdk_cur = GDK_SPRAYCAN; break;
  87         case wxCURSOR_MAGNIFIER:        gdk_cur = GDK_PLUS; break;
  88         case wxCURSOR_CHAR:             gdk_cur = GDK_XTERM; break;
  89         case wxCURSOR_LEFT_BUTTON:      gdk_cur = GDK_LEFTBUTTON; break;
  90         case wxCURSOR_MIDDLE_BUTTON:    gdk_cur = GDK_MIDDLEBUTTON; break;
  91         case wxCURSOR_RIGHT_BUTTON:     gdk_cur = GDK_RIGHTBUTTON; break;
  92         case wxCURSOR_BULLSEYE:         gdk_cur = GDK_TARGET; break;
  93
  94         case wxCURSOR_POINT_LEFT:       gdk_cur = GDK_SB_LEFT_ARROW; break;
  95         case wxCURSOR_POINT_RIGHT:      gdk_cur = GDK_SB_RIGHT_ARROW; break;
  96 /*
  97         case wxCURSOR_DOUBLE_ARROW:     gdk_cur = GDK_DOUBLE_ARROW; break;
  98         case wxCURSOR_CROSS_REVERSE:    gdk_cur = GDK_CROSS_REVERSE; break;
  99         case wxCURSOR_BASED_ARROW_UP:   gdk_cur = GDK_BASED_ARROW_UP; break;
 100         case wxCURSOR_BASED_ARROW_DOWN: gdk_cur = GDK_BASED_ARROW_DOWN; break;
 101 */
 102         default:
 103             wxFAIL_MSG(wxT("unsupported cursor type"));
 104             // will use the standard one
 105
 106         case wxCURSOR_ARROW:
 107             break;
 108     }
 109
 110     M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur );
 111 }
 112
 113 extern GtkWidget *wxGetRootWindow();
 114
 115 wxCursor::wxCursor(const char bits[], int width, int  height,
 116                    int hotSpotX, int hotSpotY,
 117                    const char maskBits[], wxColour *fg, wxColour *bg)
 118 {
 119     if (!maskBits)
 120         maskBits = bits;
 121     if (!fg)
 122         fg = wxBLACK;
 123     if (!bg)
 124         bg = wxWHITE;
 125     if (hotSpotX < 0 || hotSpotX >= width)
 126         hotSpotX = 0;
 127     if (hotSpotY < 0 || hotSpotY >= height)
 128         hotSpotY = 0;
 129
 130     GdkBitmap *data = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) bits, width, height );
 131     GdkBitmap *mask = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) maskBits, width, height);
 132
 133     m_refData = new wxCursorRefData;
 134     M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(
 135                  data, mask, fg->GetColor(), bg->GetColor(),
 136                  hotSpotX, hotSpotY );
 137
 138     gdk_bitmap_unref( data );
 139     gdk_bitmap_unref( mask );
 140 }
 141
 142
 143 wxCursor::wxCursor( const wxCursor &cursor )
 144 {
 145     Ref( cursor );
 146 }
 147
 148 wxCursor::~wxCursor()
 149 {
 150 }
 151
 152 wxCursor& wxCursor::operator = ( const wxCursor& cursor )
 153 {
 154     if (*this == cursor)
 155         return (*this);
 156
 157     Ref( cursor );
 158
 159     return *this;
 160 }
 161
 162 bool wxCursor::operator == ( const wxCursor& cursor ) const
 163 {
 164     return m_refData == cursor.m_refData;
 165 }
 166
 167 bool wxCursor::operator != ( const wxCursor& cursor ) const
 168 {
 169     return m_refData != cursor.m_refData;
 170 }
 171
 172 bool wxCursor::Ok() const
 173 {
 174     return (m_refData != NULL);
 175 }
 176
 177 GdkCursor *wxCursor::GetCursor() const
 178 {
 179     return M_CURSORDATA->m_cursor;
 180 }
 181
 182 //-----------------------------------------------------------------------------
 183 // busy cursor routines
 184 //-----------------------------------------------------------------------------
 185
 186 extern wxCursor g_globalCursor;
 187
 188 static wxCursor  gs_savedCursor;
 189 static int       gs_busyCount = 0;
 190
 191 const wxCursor &wxBusyCursor::GetStoredCursor()
 192 {
 193     return gs_savedCursor;
 194 }
 195
 196 const wxCursor wxBusyCursor::GetBusyCursor()
 197 {
 198     return wxCursor(wxCURSOR_WATCH);
 199 }
 200
 201 void wxEndBusyCursor()
 202 {
 203     if (--gs_busyCount > 0)
 204         return;
 205
 206     wxSetCursor( gs_savedCursor );
 207     gs_savedCursor = wxNullCursor;
 208
 209     if (wxTheApp)
 210         wxTheApp->SendIdleEvents();
 211 }
 212
 213 void wxBeginBusyCursor( wxCursor *WXUNUSED(cursor) )
 214 {
 215     if (gs_busyCount++ > 0)
 216         return;
 217
 218     wxASSERT_MSG( !gs_savedCursor.Ok(),
 219                   wxT("forgot to call wxEndBusyCursor, will leak memory") );
 220
 221     gs_savedCursor = g_globalCursor;
 222
 223     wxSetCursor( wxCursor(wxCURSOR_WATCH) );
 224
 225     if (wxTheApp)
 226         wxTheApp->SendIdleEvents();
 227 }
 228
 229 bool wxIsBusy()
 230 {
 231     return gs_busyCount > 0;
 232 }
 233
 234 void wxSetCursor( const wxCursor& cursor )
 235 {
 236     if (g_isIdle)
 237         wxapp_install_idle_handler();
 238
 239     g_globalCursor = cursor;
 240 }